Galenite and fluorite minerals. Galenite,a lead sulphide mineral and primary ore of lead has formed cubic crystals (black) on a base of fluorite (brown). Fluorite is a calcium fluoride mineral and an ore of fluorine. This sample measures 180 millimetres across | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Wiersma, Dirk |
Taille de l’image : | 5184 px × 3401 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |